extends layout
block content
    style.
        a:link {background-color:#B2FF99;}     /* unvisited link */
        a:visited {background-color:#FFFF85;}  /* visited link */
        a:hover {background-color:#FF704D;}    /* mouse over link */
        a:active {background-color:#FF704D;}   /* selected link */
        a:link {text-decoration:none;}         /* unvisited link */
        a:visited {text-decoration:none;}      /* visited link */
        a:hover {text-decoration:underline;}   /* mouse over link */
        a:active {text-decoration:underline;}  /* selected link */
    p
        b
            a(href="/css/" target="_blank") This is a link
    p
        b 注意:
        |  hover必须在:link和 a:visited之后定义才有效.
    p
        b 注意:
        | active必须在hover之后定义是有效的.
